Nutrient-analyzing system

Schematic of a minimal nutrient-analyzing system

Automatic self-cleaning filter

Automatic self-cleaning filter are easy to maintain and keeps the instruments clean

Service

Service on an automatic self-cleaning filter for nutrient analyzers on board a research vessel

System on vessel

Fully automatic nutrient analyzing system on monitoring vessels

Small system

Small nutrient-analyzing system with automatic self-cleaning filter and only very-simple-to-use control elements

OceanPack™ data logger

OceanPack™ data logger quick-look with values of 5 standard nutrients parameters: NO3, NH3, NO2, PO4, SiO2. All values are displayed with the optical density before and after the analysis to check the quality

• Stable measurements for long-term autonomous applications
• High data safety with redundant storage and automatic reboot
• Monitoring of external parameters such as water flows, oxygen etc.
• Soft-PLC to control pumps and valves with alarm options
• Marine Ship and Buoy supported installation
• Optional automatic self-cleaning pre-filtration and waste water treatment
• Low running expenses – long retention

• Two ray photometer (ion selective electrode for some data parameter) with loop-flow-analyses (LFA) and temperature stabilisation
• Detection limits e.g. ammonia 1ppb, phosphate 0.5ppb
• Analyzing cycle typically 5-12 minutes
• Reagents in Internal reservoir (optionally refrigerated) or external compressor cooler. Buffer solution and deionised water can be stored externally in larger bulks
• RS-232 and optionally analogue output (0-5V, 4-20mA). Optionally digital pins for status and error (i.e. air bubbles, leakage, measurement range)
• Configuration menus, graphical display, data and status memory. Plastic foil keyboard for diagnostics, program selection and programming
• Automatic, internally and externally programmable calibration
• Power 10-36VDC or 90-230V AC. 0.1W remote-off, 4W stand-by, approx. 10W analysis

• The optional self-cleaning automatic filter is recommended. Flow rate approx. 2-10 l/h per calibration. Internal tube pump or programmable external pump
• Optional Reservoir tanks with automatic drain and alarm sensor
• Enclosed and tempered cabinet for usage under especially rough conditions
• Development and planning of complete measurement systems
• Support in installation, training and operation on board
• Special training at SYSTEA’s lab for low costs is provided by SubCtech with SYSTEA with your own analyzer, guarantees fast familiarization and best results
• Concept and construction of water logistics and reagents storage
• Maintenance and diagnostics of operating systems, after-sales support

SYSTEA, Italy, and SubCtech, Germany, offer a unique online nutrient measurement technology for industrial and environmental monitoring, and for professional oceanographic research. The mobile and small MicroMac-1000MP Analyzer is applied hundredfold all over the world. It convinces with a low detection limit and the capability to run long-term measurements driven by a solid time calibration. The reagent consumption is incredibly low having only a couple of 100μl each analysis. Longer maintenance intervals reduce the running expenses. SubCtech’s SmartDI^® “Smart Data Interface” is used to acquire data from analyzers, and optionally from sensors too. It is also able to take control of processes.

During the collection of data, the pre-processing already validates the values and passes quality-evaluated data records on to back-end systems. All data records are encoded according to ISO. The 2GB CompactFlash card is able to store years’ worth of high-resolution data. Firmware and data are stored on separate Compact-Flash cards. Thus data can be accessed easily without endangering any firmware files.

The SmartDI^® quick-look function, extensive configuration and diagnostic menus provide a user-friendly interface. The modular and expandable structure allows simple and economic adjustments. Thus it fits the most diverse applications. The system’s high degree of modularity guarantees a sustainable investment.

The team of SubCtech already cooperates with SYSTEA, Italy, for many years. SubCtech and German authorities for waterways contracted to improve and install nutrient analyzers on German platforms in the North Sea. SubCtech is specialized to improve nutrient analyzers for maritime operations, particularly on moving platforms (e.g. buoys, unmanned lightships, research vessels).